Analysis of Pesticide Residues in Tomatoes and French Beans from Murang’a and Kiambu Counties, Kenya

European Journal of Nutrition & Food Safety Pub Date : 2020-12-26 DOI:10.9734/ejnfs/2020/v12i1130328

E. Kipkemoi, W. A. Andayi, Eric C. Njagi, Brian M. Ptoton

{"title":"Analysis of Pesticide Residues in Tomatoes and French Beans from Murang’a and Kiambu Counties, Kenya","authors":"E. Kipkemoi, W. A. Andayi, Eric C. Njagi, Brian M. Ptoton","doi":"10.9734/ejnfs/2020/v12i1130328","DOIUrl":null,"url":null,"abstract":"Poor Pesticide-handling practices during production of tomatoes and French beans pose adverse health and environmental effects. This study was conducted to determine the concentrations of pesticide residues in tomatoes and French beans grown and sold in Murang’a and Kiambu counties, Kenya. Samples were collected in farms and markets during the wet and dry seasons. Pesticide residues were extracted using the QuEChERS method and quantified using GC-MS/MS and LC-MS/MS. The recoveries of pesticides from spiked samples were within the acceptable range (70-120%) for quantitative pesticide residue methods. The concentration range of pesticides residues in tomatoes were: profenofos, <LOQ to 0.18 mg/Kg; omethoate, <LOQ to 0.03 mg/Kg; indoxacarb, <LOQ to 0.05 mg/Kg; chlorantraniliprole <LOQ to 0.11 mg/Kg; spirotetramat <LOQ to 0.01 mg/Kg; and metalaxyl < LOQ to 0.02 mg/Kg. The concentration range of pesticides residues in French beans were: imidacloprid <LOQ to 0.29 mg/Kg; chlorantraniliprole <LOQ to 0.37 mg/Kg; spirotetramat <LOQ to 0.01 mg/Kg; indoxacarb <LOQ to 0.05 mg/Kg; and metalaxyl <LOQ to 0.02 mg/Kg. The concentrations of pesticide residues in tomatoes and French beans were below the Maximum Residue Levels set by the Joint FAO/WHO Food Standards Programme and the European Union except for concentrations of omethoate in tomatoes, which were higher in 29% of analyzed samples. The presence of omethoate in tomatoes, whose use in vegetables is banned, suggests poor pesticide handling practices by some tomato farmers in the two counties.","PeriodicalId":11994,"journal":{"name":"European Journal of Nutrition & Food Safety","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2020-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"European Journal of Nutrition & Food Safety","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.9734/ejnfs/2020/v12i1130328","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 3

Abstract

Poor Pesticide-handling practices during production of tomatoes and French beans pose adverse health and environmental effects. This study was conducted to determine the concentrations of pesticide residues in tomatoes and French beans grown and sold in Murang’a and Kiambu counties, Kenya. Samples were collected in farms and markets during the wet and dry seasons. Pesticide residues were extracted using the QuEChERS method and quantified using GC-MS/MS and LC-MS/MS. The recoveries of pesticides from spiked samples were within the acceptable range (70-120%) for quantitative pesticide residue methods. The concentration range of pesticides residues in tomatoes were: profenofos,

查看原文本刊更多论文

肯尼亚Murang 'a和Kiambu县番茄和法国豆中农药残留分析

在生产西红柿和法国豆期间，不良的农药处理做法对健康和环境造成不利影响。进行这项研究是为了确定在肯尼亚穆朗阿县和基安布县种植和销售的西红柿和法国豆中农药残留的浓度。样本是在旱季和雨季在农场和市场采集的。采用QuEChERS法提取农药残留，采用GC-MS/MS和LC-MS/MS进行定量分析。加标样品中农药的回收率在农药残留定量方法可接受范围(70 ~ 120%)内。番茄中农药残留浓度范围为:异丙磷

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

European Journal of Nutrition & Food Safety

自引率

0.00%

发文量

京公网安备 11010802042870号

Book学术文献互助群
群号：481959085